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(No Model.) 2 Sheets-Sheet 1.

J. A. CLARK.

PAPER CUTTING ATTACHMENT POR PAPER BOX COVERINC MACHINES. No. 392,313, Pg-NM 6, 188.8. s x n (No Moda.) 2 sheets-sheet z.

J. A. CLARK. PAPER CUTTING .ATTACHMENT PCE PAPER BOX CCVEEINC MACHINES.

No. 392,313. Y Patented Nov. 6, li88.

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UNITED STATES l PATENT OFFICE.

JAMES ARTHER CLARK, OF HERKIMER, NEW YORK.

PAPR-CUTTING ATTACHMENT FOR- PAPER-BOX-COVERING MACHINES.

SPECIPICATIONforming part of Letters Patent No. 392,313, dated November 6, 1888,

- Application filed March 23,1886. Serial No. 196,276. (No model.)

To all whom/ it may concern:

i Be 1t known that I, J AMEs ARTHEE CLARK,

a citizen of the United States, residing at Herkimer, in the county of Herkimer and State of New York, haveV invented a new and useful Improvement in Paper Cutting Attachments for Paper-BoX-Oovering Machines, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to an improvement in paper-cutting attachments for paper-boX-covering machines; and it consists in the peculiar construction and combination of devices, that will be more fully lset forth hereinafter, and particularly pointed out in the claims.

In the drawings, Figure 1 is a perspective view of my invention. Fig. 2 is a vertical sectional view of the same, taken on the line x x of Fig. l. Fig. 3 is a similar view taken on the line y y of Fig. 1. Figs. 4 and 5 are detail views.

I have herein shown and particularly described only the box-machine head provided with my improvements, omitting the remainder of the paper-boX-covering machine, which is of the usual well-known construction, and forms no part of my present invention.

A represents the box-machine head, which is provided on its upper side, near one edge, with a pair of parallel vertical iianges, B, which are grooved on their opposing faces, as at C.

D represents a slide, which is provided on its under side, near one end,with a depending ange or shoulder, D', which works between the lianges B, and vertically through an opening which is made in the said slide passes a set-screw, D2, having a broadened head at its lower end,which fits in the grooves C, and :its upper end provided with a thumb-nut, by means of which the-slide may be tightened on the anges (which form a guideway) at any desired adjustment on the machine. From the outer end of the slide B projectsa vertical standard, E, to which is secured a verticallyadjustable block, F, by means of a set-screw, f, which binds against the standard. To one end of the block F is rigidly secured the lower jaw, G, of a pair of shears by means of screws g, the cutting-edge of the said jaw Gr projecting at right angles from one side of the machine-head and in a horizontal line.

H represents a pivotal bolt, which passes horizontally through an opening that is made in the block F and forms a fulcrum for the upper pivoted cutting-jaw, G. On the threaded end of the bolt H is placed a circular springplate, I, having notches cut in its periphery, and thereby forming radial arms which bear against one end of the block F, and nuts 7L and h' are screwed on the threaded end of the bolt H and bear against the plate I, so as to force the latter with any desired degree of pressure against the block F, and thereby keep the jaw G' firmly pressed against the lower jaw, G.

On the upper side of the head A,at one end, is secureda vbearing-block, A', in which is journaled a transverse shaft, K. Near one end of the said shaft,and between the side walls of the head, is secured a gear-wheel, K', which is adapted to gear with a driving gear-wheel, forming a part of the paper-boX-covering machine, in order to rotate the shaft K. One end of the said shaft extends outwardly for asuitable distance beyond the front Aside of the machine-head, and to the said shaft is secured a 'circular disk, L, in proximity to the front side of the machine. Projecting from the rim of this disk is a tappet-arm, L', and near the rim of the disk is made a transverse opening, through which passes a stud, L2, the outer end of which projects normally beyond the outer face of the disk L.

M represents a flat spring, which has one end secured to the rear side of the disk by means of a screw, M', and near the outer end of the said spring is made a slot, m, through which passes a screw, m', that enters the rear end of the stud L2, and thereby secures the said stud to the free end of the spring. rIhe function of the latter is to keep the stud L2 normally pressed outwardly beyond the outer face of the disk. The outer end of the spring M is provided with a projection, l 2, which extends radially from the rear side of the disk and is inclined at a slight angle therefrom.

Nrepresentsadisl ,whichisjournaledloosely on the projecting end of the shaft K, and is provided near its rim, on one side,with an opening, N', to receive the projecting end of the stud L2, and communicating at one end with ICO the said opening, on the inner face ofthe said disk, is a concentric groove, N, which is of suitable length. The inner face of the disk N bears normally against the opposing outer face of the disk L, and the stud L'l normally projects through the opening N' in the said disk N. The latter is provided on its outer side with a projecting sleeve, N, which is threaded for a suitable distance from its outer end, and thereby adapted to receive and secure the form upon which the paper box is to be placed. This forni is represented in Figs. l and 3 by dotted lilies, and is not more fully described here for the reason that it is of the wellknown usual construction. The outer end ofthe shaft K is provided with a reduced threaded spindle, K2, on which is screwed a nut, K, which bears against the outer end of the sleeve ofthe disk N, to prevent the latter from moving laterally on the shalt and causing its inner face to always bear against the opposing face ofthe disk L.

The box-form has an opening through which the threaded sleeve passes, and on the said sleeve is a hand clamping-nut, Z, which bears against the outer side ofthe box-forni and secures the saine firmly in place upon theslecve.

On the front side of the head A is secured a bracket, O, which is provided with an outwardly-extending horizont-al upper arni, O', the outer end of which projects beyond the rini of the disk L and just clears the said disk. ()n the side of the said arm, adjacent to the disk, is made a groove, O", at an angle of about thirty-five degrees fro in the perpeiidiculai, thereby forming a cani, O, on the outer end of the said arm, to engage with the pro` jection M2 of the spring M once during every revolution of the shalt li.

I represents a roekshaft on the front side of the head A and arranged horizontally thereon, one end of the said shaft beingjournaled in an offset at one end of the head and the other end ofthe said shaft being journaled in the arni O. ltigidly secured to one end of the rockshaft is an arm, P,which bears against one side of the arm Oof the bracket, and projects outwardly from the rock-shaft in the path traversed by the tappet-arni L. The rockshaft is provided on one side with a spline, l, which extends the entire length of the shaft, and engages an arni, lt, which projects from the rock-sliaft substantially in aline with the arni l, the said arni R being thereby feathered on the said shaft and movable thereon.

S represents a pitnian, one end of which is connected to the outer end of the arm It by means of a screw, R', and the upper end ofthe said pitman is provided with a series ofopenings, Si, through one of which projects a threaded stud, f t2, which extends from the rear end of the jaw C t, and thereby connects the lat ter to the pitinan. A thumb-nut,G, is screwed onto the outer end of the stud G2, to prevent the pitman from slipping olf the said stud. By providing the series of openings for the pitman it will be readily understood that thejaw G may be secured thereto at any desired adjustment, and thereby regulate the stroke of the said jaw.

From the endol' the rock-shaft opposite the the arm P' projects an arm,T, which is secured on the said shaft, and the lower end of the said arm is connected to the lower front side of the head A by means of a coiled retractile spring, U.

rl`hc paper used to cover the box passes from the roll on the machine and through the guinniing apparatus thereon, (which applies glue to the under side of the paper,) ont between the jaws of the shears (bearing on the horizontal edge of the jaw G) to the box on the box-forin. When the shaft K is rotated the box-forni is turned, thereby causing the paper to cover the sides of the box. Bythe time that the tappetarm Lreaclies the under side of the arm P the box is covered, and it only remains to sever the paper. Continued rotation of the shaft .l causes the arm L to in'ove the arni l upwardly, and thereby partly rotate the rock-shaft against the tension of the spring U, and cause the jaw G to descend .on the upper side of the paper, thereby causing the shears to sever thepaper,as will be very readily understood. \Vhile the jaws are in the act of cutting the paper it is necessary that the boxform should remain stationary, and for this purpose I have devised the disk `the engaging-stud projecting from a disk, L, the spring for actuating the stud, and the cani for mov ing the spring, hereinbefore described. The instantlthat the tappetarnl L engages with the arm I of the rock-sliaft to actuate the cutting-shears the projection M2 of the spring also engages the lower inclined face of the cam Oi. As the said projection travels up on the inclined face of the said cam, and while the jaw G is in its initial movement, the action of the cain on the spring forces the free end of the latter from the rear side of the disk L, thereby withdrawing the outer end of the stud LE from the opening N in the disk N, and causes the said stud to work in the concentric slot N3 on the inner face of the disk N, and

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thereby permit the said disk, and consequent] y the box-form carried by the said disk, to remain stationary on the shaft K while the latter is moving through a portion of its rotation, and while the jaw G is descending in the act of cutting the paper from the box. L

Then the engaging end or projection of the spring ill. clears the cam O, the stud Lz remains in the concentric slot N'l at the end thereof farthest removed from the opening N. The attendant, in the act of affixing the free end of the severed strip of paper to another box'wnich has replaced the finished end on the box-forin, lrotates` the disk N far enough to cause the stud LL to traverse in a retrograde direction the slot M2 and again engage tlie openinfr t and thereby lock the disk N firmly to the disk L, when the operation is proceeded with as before.

rlhe function of the guideway B on the machine-head and the slide D engaging therewith and carrying the shears is to permit the latter to be adj usted laterally toward or from the box-form, and thereby adapt the shears to operate when covering boxes of any size. By providing the standard E and making the block F, which carries the shears, vertically adjustable on the said standard the shears may be adjusted vertically to accommodate different-sized boxes that are being covered, and by providing the pitman connecting the jaw G with the rock-shaft with the series of openings the jaw G may be so adjusted as to cause is to swing through any desired segment of a circle, and thereby regulate the cut or shear of the jaws to the width of the strip of paper to be severed.

The function of the spring U is to return the jaw G to its normal position when the tappetarm disengages the arm P' of the rockshaft.

Having thus described my invention, I claim- 1. In combination with the mechanism7 substantially as described, for rotating the boxform of a paper-boX-covering machine, the adjustable slide D, the standard E, connected to the slide, the shears vertically adjustable on the standard, and connections, substantially as described, between the shears and the mechanism which rotates the boxform, as set forth.

2. The combination, in a paper-boX-covering machine, of the rotating shaft K, carrying the box-form, the laterally-adjustable vertical standard E, the shears vertically adjustable on the said standard and having the rigid jaw G and the pivoted jaw G', for cutting the paper when the box is covered, and means, substantially as described, connecting the shaft K with the pivoted javvr to operate the latter automatically at each rotation of the shaft, substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto aixed my signature in pres- 45 ence of two Witnesses.

JAMES ARTHER CLARK. Witnesses:

J. A. SUITER, Jr., FRED M. HELMEs. 

